169789454 has 4 divisors (see below), whose sum is σ = 254684184. Its totient is φ = 84894726.

The previous prime is 169789441. The next prime is 169789463. The reversal of 169789454 is 454987961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454987961 = 31 ⋅14677031.

It is a junction number, because it is equal to n+sod(n) for n = 169789396 and 169789405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42447362 + ... + 42447365.

It is an arithmetic number, because the mean of its divisors is an integer number (63671046).

Almost surely, 2^169789454 is an apocalyptic number.

169789454 is a deficient number, since it is larger than the sum of its proper divisors (84894730).

169789454 is an equidigital number, since it uses as much as digits as its factorization.

169789454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84894729.

The product of its digits is 2177280, while the sum is 53.

The square root of 169789454 is about 13030.3282383829. The cubic root of 169789454 is about 553.7370345518.

The spelling of 169789454 in words is "one hundred sixty-nine million, seven hundred eighty-nine thousand, four hundred fifty-four".